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<H1><A name=TP-Validity-Period></A>Validity Period (TP-VP)</H1>
<BLOCKQUOTE>Validity period specifies the time when SM expires. If SM is't 
  delivered before that moment, it is discarded by SC. Validity-Period can be in 
  three different format; Relative, Absolute and Enhanced. 
  <H3><A name=TP_VP_Relative></A>Relative:</H3>
  <BLOCKQUOTE>The TP-Validity-Period comprises 1 octet in integer 
    representation, giving the length of the validity period, counted from when 
    the SMS-SUBMIT is received by the SC. The representation of time is as 
    follows: 
    <TABLE width="80%" border=1>
      <TBODY>
      <TR bgColor=#ffffcc>
        <TD>TP-VP value</TD>
        <TD>Validity period value</TD></TR>
      <TR>
        <TD>0 to 143</TD>
        <TD>(TP-VP + 1) * 5 minutes (i.e. 5 minutes intervals up to 12 
        hours)</TD></TR>
      <TR>
        <TD>144 to 167</TD>
        <TD>12 hours + ((TP-VP - 143) * 30 minutes)</TD></TR>
      <TR>
        <TD>168 to 196</TD>
        <TD>(TP-VP - 166) * 1 day</TD></TR>
      <TR>
        <TD>197 to 255</TD>
        <TD>(TP-VP - 192) * 1 week</TD></TR></TBODY></TABLE></BLOCKQUOTE>
  <H3><A name=TP_VP_Absolute></A>Absolute</H3>
  <BLOCKQUOTE>TP-VP field is 7 octets long, containing <A 
    href="http://www.dreamfabric.com/sms/scts.html">TP-SCTS</A> formatted time 
    when SM expires. See ETSI 03.40 for more information. </BLOCKQUOTE>
  <H3><A name=TP_VPF_Enhanged></A>Enhanced</H3>
  <BLOCKQUOTE>See ETSI 03.40 </BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>
